Both the Landau Harbor Cruise 20 2010 and the Landau Limited Edition 22 Cruise 2008 are pontoon designs, the first built in aluminium and the second in fibreglass, so the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?
On paper these two are close siblings in the size department - Landau Harbor Cruise 20 2010 at 20,0 ft versus Landau Limited Edition 22 Cruise 2008 at 22,0 ft. At 1 669 lbs and 1 721 lbs respectively, both sit in a similar weight class - either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.
The power gap is worth calling out. Rated to 130 hp, the Landau Limited Edition 22 Cruise 2008 has a 40-hp advantage over the Landau Harbor Cruise 20 2010's 90-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load.
For family outings this is probably the sharpest distinction between the two. The Landau Limited Edition 22 Cruise 2008 is rated for 11 passengers, while the Landau Harbor Cruise 20 2010 caps at 8. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Landau Limited Edition 22 Cruise 2008 could be the deciding factor.
Both are 23-tube and 2-tube pontoon designs respectively. Tube diameter and gauge affect stability and load capacity - more so than most buyers realize when comparing on paper.
Bottom line: Choose the Landau Limited Edition 22 Cruise 2008 if your priority is putting more people on the water - it handles 11 passengers and at 22,0 ft it has the deck room to back that rating up comfortably. The Landau Harbor Cruise 20 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 8 that costs less to run day-to-day.